DE524C - Jacquard self-gear for mechanical warp knitting chairs - Google Patents

Description

1877.

Class 25.

L. LÖBEL in LIMBACH. Jacquard self-gear for mechanical warp knitting chairs.

Patented in the German Empire on July 21, 1877. Longest duration: February 28, 1890.

The word »gear« on the chain knitting chair refers to the device for the lateral Movement of chain machines; if it is attached to the chair to work automatically, so one calls it a self-transmission and here one for the regulation of a device Jacquard Maschme (as commonly used in weaving) is used, that's what he calls it Inventor of the “Jaquard automatic transmission”.

Each chain machine a, Fig. 1 is, as has been the case up to now , pressed against a slide or so-called bolt b by a spring and this in turn hits the angle c, which is screwed onto the straight slide d. At the end on the right the latter is forked and forms the two pieces ef (Fig. 1 and 2), which extend into two boxes g and h . These boxes, in turn, are each attached to a slide i and k , which, pulled by springs /, are attached to the corner wheels (so-called cutting wheels) m and η .

These cutting wheels m η are provided on the circumference with regularly distributed elevations and depressions, the division of which is arbitrary and the height of which can also be arbitrary, but five chair needle divisions have been found most suitable. The cutting wheels are rotated at the right time during each row by a depression or a rise by a ratchet wheel o sitting on their shaft, the pawl o _x and the lifting disc o ₂ (FIG. 3) on the main shaft / of the chair; they are also offset from one another in such a way that an elevation of one wheel m lies next to a depression of the other η and vice versa. Instead of the whole cutting wheels m η , parts of them, each provided with only one elevation and depression, can be used, so that they do not turn around, but alternately an elevation of one part m and a depression of the other n, against the slides i and k keep directed.

If the boxes g and h were empty and the fork ends e and / were stuck against the rear walls of the same, the chain machine a, pulled by its spring, would always be on one of the sliders i and k and with the same always on one Increase one of the cutting wheels in or η . In doing so, the machine would not be shifted sideways at all, because if a slide i slides down its elevation to m in order to let the machine move to the right, the other k rises at an elevation to η and thus stops the machine again left back.

In order to achieve a lateral displacement of the machine, the inventor has gh in the box iron plates 1, 2, set, etc 3 which are regelmäfsig drawn down so deep spiral springs, that the fork arms ef of time ranging about it, but which by cords and by the sinkers q an ordinary jacquard machine when the sinkers have not been _{pushed off by their knife ^ 1} and are lifted by the same. Each plate 1, 2, etc. is just as thick as a fecal needle healing; if z. B. an increase on m presses the slide i firmly against e , while k, pulled by the spring /, moves to the right into a depression of », a space k * is created between the end of / and the rear wall of the box h, (Fig. 2) of five needle divisions in length, ie equal to the height of ηι, _Λ . Are now some of the plates, z. B. pulled up four, so when m and n are rotated, the latter cutting wheel η through its slide k to the four plates and through them to f, that is to push the machine, consequently move the latter by four needle pitches to the left. If, however, k is pushed to the left by the increase to η and i is moved into the depression to the right, then between e and the rear wall of the box g there is a free space of 9 chair needle sections in length and depending on whether this is filled with plates, you can now the machine can be moved to the right again, or left behind to the left. The cards of the jacquard machine are struck in such a way that they have holes at the points at which the machine is to be shifted by a needle, that is, panels are to be lifted. The stroke of the knife box and the pushing out of the swinging card cylinder take place in the usual way - here from the drive shaft of the chair.

Since so-called "blind placements" occur in some warps, that is, layers of thread on the needles which are not worked into stitches, the press of the chair must not be active in some rows. For this purpose, the roller r of the prefs lever (FIG. 4) is shifted so that the prefs eccentric V ₁ does not hit the latter. The advance of this roll r is done by the transmission through its jacquard machine in the following way: the roll r is gripped by the arm of a push rod ί, this is shifted to the right by an angle lever tt _x when-.ή is lifted by u and by a Spring s ^A pulled to the left when u descends again. The rod u rests, however, as shown in FIG. 3, on a cutting wheel v, which contains alternating elevations and depressions and is rotated by a ratchet wheel w and pawl χ. The pawl χ rises and falls once for each row, driven by a lifting disc of the main shaft, which presses down the rod y , which is raised again by the spring) \. The pawl χ is also connected by a cord ζ to a plate of the jacquard machine and can either be removed from w or inserted into w for each row. Only in the latter case w and ν rotate and thereby cause a shift of r, which position is then retained on as many rows as the pawl χ is removed from w. The jacquard gearing thus also serves to regulate the press movement,

For this purpose ι sheet of drawings.